A trampoline
CA 2591090 C · Owner: Alexander, Keith Vivian · Inventors: Alexander, Keith Vivian
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A trampoline including a flexible mat (1) and a plurality of resiliently flexible rods (2) the lower ends of which are retained in a frame (3) of the trampoline and the upper ends of which are coupled to the mat (1) about a periphery of the mat to support the mat in which the rod stiffness against , bending is greater than about 1200 and up to about 3000 N/m and the rods (2) are deflected at the upper ends of the rods from a natural state of rest when , the rods are in the position in the frame (3) at their lower ends but before connection with the mat edge at their upper ends to connection with the mat by up to about 450mm.
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed December 8, 2005 and granted July 31, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 8, 2025.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.